Diabetes Care
30:771-776,
2007
DOI: 10.2337/dc06-1887
© 2007 by the American Diabetes Association
Clinical Care/Education/Nutrition Original Article |
Maternal Glycemic Control and Hypoglycemia in Type 1 Diabetic PregnancyA randomized trial of insulin aspart versus human insulin in 322 pregnant women
Elisabeth R. Mathiesen, MD, DMSC1,
Brendan Kinsley, MD, FRCPI2,
Stephanie A. Amiel, MD, FRCP3,
Simon Heller, MD, FRCP4,
David McCance, MD5,
Santiago Duran, MD6,
Shannon Bellaire, MSC7,
Anne Raben, PHD7 on behalf of the Insulin Aspart Pregnancy Study Group
1 Department of Endocrinology, Rigshospitalet, Copenhagen, Denmark
2 Department of Endocrinology, Mater Misericordiae University Hospital Dublin, Dublin, Ireland
3 Diabetes Research Group, Kings College School of Medicine, London, U.K.
4 Northern General Hospital, Sheffield, U.K.
5 Regional Centre for Endocrinology and Diabetes, Royal Victoria Hospital, Belfast, U.K.
6 Unidad de Investigacion Diabetes, Hospital Virgen de Valme, Seville, Spain
7 Novo Nordisk, Copenhagen, Denmark
Address correspondence and reprint requests to Elisabeth R. Mathiesen, Copenhagen Centre for Pregnant Women With Diabetes, Department of Endocrinology 2132, Rigshospitalet, Blegdamsvej 9, DK-2100 Copenhagen, Denmark. E-mail: em{at}rh.dk
OBJECTIVETo assess the safety and efficacy of insulin aspart (IAsp) versus regular human insulin (HI) in basal-bolus therapy with NPH insulin in pregnant women with type 1 diabetes.
RESEARCH DESIGN AND METHODSSubjects (n = 322) who were pregnant or planning pregnancy were randomized to IAsp or HI as meal-time insulin in an open-label, parallel-group, multicenter study. Subjects had A1C 8% at confirmation of pregnancy. Insulin doses were titrated toward predefined glucose targets and A1C <6.5%. Outcomes assessed included risk of major maternal hypoglycemia, A1C, plasma glucose profiles, and maternal safety outcomes.
RESULTSMajor hypoglycemia occurred at a rate of 1.4 vs. 2.1 episodes/year exposure with IAsp and HI, respectively (relative risk 0.720 [95% CI 0.361.46]). Risk of major/major nocturnal hypoglycemia was 52% (RR 0.48 [0.201.143]; P = NS) lower with IAsp compared with HI. A1C was comparable with human insulin in second (IAsp-HI 0.04 [0.18 to 0.11]) and third (0.08 [0.23 to 0.06]) trimesters. A total of 80% of subjects achieved an A1C 6.5%. At the end of first and third trimesters, average postprandial plasma glucose increments were significantly lower with IAsp than HI (P = 0.003 and P = 0.044, respectively), as were mean plasma glucose levels 90 min after breakfast (P = 0.044 and P = 0.001, respectively). Maternal safety profiles and pregnancy outcomes were similar between treatments.
CONCLUSIONSIAsp is at least as safe and effective as HI when used in basal-bolus therapy with NPH insulin in pregnant women with type 1 diabetes and may potentially offer some benefits in terms of postprandial glucose control and preventing severe hypoglycemia.
Abbreviations: HI, human insulin IAsp, insulin aspart ITT, intention-to-treat

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Copyright © 2007 by the American Diabetes Association.
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